Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Arbitration

Cases by region

Europe, North America, Asia-Pacific, Middle East, Africa and Latin America: where the parties come from and why.

Updated : October 28, 2026· 3 min read

A global tribunal

Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)
Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)

The parties to the TAO come from more than ninety countries. More than half the cases pit parties from different countries against each other. The breakdown by region reflects both the geography of the art market and the spread of arbitration.

Regions follow OIMAP's nomenclature. Figures are given for 2024, with the change from 2023.

This page presents the breakdown, regional dynamics and their practical consequences (languages, seats, arbitrators).

  • Regions
  • Seat
  • Origin

Cases by region in figures

44%Europe
24%North America
17%Asia-Pacific
90+Countries represented

Source: Registry of the OIMAP Arbitral Tribunal.

Breakdown

Europe44%
North America24%
Asia-Pacific17%
Middle East8%
Africa and Latin America7%

Share of 2024 cases by region.

Europe and North America

Europe remains the first region of origin of the parties (44%), driven by France, Switzerland, the United Kingdom, Germany and Italy. North America (24%) is dominated by the United States and Canada, with a high proportion of contract and provenance disputes.

These two regions use mainly English and French. They also supply most of the arbitrators on the list, but their share is shrinking as the list diversifies.

Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Carnet (1863–1865)
Carnet (1863–1865)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)

Asia-Pacific and Middle East

Asia-Pacific (17%) grew by 21% in one year, driven by the growth of the Chinese, Japanese, Singaporean and Australian markets. Authenticity and contract disputes dominate. The Middle East (8%) rose by 35%, with the development of the Dubai, Doha and Riyadh centres.

For these regions, hearings are often held in Singapore or Dubai, or remotely. The tribunal has accredited new arbitrators and mediators there.

Africa and Latin America

These two regions account for 7% of cases, but are the source of many restitution and provenance disputes. Their participation is growing thanks to support from the Protection Fund and the training of national counsel.

The States of these regions are also among the most active in concluding bilateral cooperation agreements on restitution.

Towards regional offices

The council is studying the creation of regional offices in Singapore and Dubai, which would host hearings, training and Registry services. This project responds to growing demand from users in Asia-Pacific and the Middle East.

It presupposes strengthening local lists of arbitrators and mediators, training registrars and guaranteeing uniform practices.

Breakdown 2024

Five regions
RegionShareEvolution
Europe44%+6%
North America24%+9%
Asia-Pacific17%+21%
Middle East8%+35%
Africa and Latin America7%+14%

Milestones

  1. Europe

    Almost exclusive.

  2. North America

    Growing momentum.

  3. Asia-Pacific

    Growth.

  4. Middle East

    +35%.

Region of origin and seat

The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)
Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)
Seal Color Box (1662–1722)
Seal Color Box (1662–1722)

Local or international procedure

The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)

Local

Parties from the same region
  • Common language and culture
  • Faster procedure
  • Lower costs

About 48%.

Coronation of the Virgin, Christoffel Jegher (1632–36)

International

Parties from different regions
  • Neutrality of the tribunal
  • Cross-border enforcement
  • More complexity

About 52%.

Reading the map

  1. Choose

    Region.

  2. Compare

    Shares.

  3. Observe

    Trends.

  4. Interpret

    Context.

  5. Act

    Seat and arbitrators.

Points to watch

A lawyer from Singapore

The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)
« Being able to plead in my own time zone and with arbitrators who know our market made all the difference. »
Me Wei Lin Tan, lawyer

Vocabulary of regions

Seat
Legal place of the arbitration.
Nomenclature
Classification into regions.
Cross-border
Between several countries.
Regional office
Branch of the tribunal.

Frequently asked questions

Are country names published?

No, by region.

Can another seat be chosen?

Yes.

Are there arbitrators in my region?

See the directory.

Where can I see the types of dispute?

Useful documents

Contacts

The Doge's Palace, Venice, Richard Parkes Bonington (1826)
The Doge's Palace, Venice, Richard Parkes Bonington (1826)
Registry of the Arbitral Tribunal (TAO)Paris — Head Office+33 1 00 00 04 00greffe.tao@oimap.exampleMonday to Friday, 9 a.m. – 5 p.m.

See the breakdown by type of dispute

Chemin de fer de Toulouse à Bayonne. Pont de l'Aran (en trois arches de 17m d'ouverture chacune). Situation des travaux au 21 juillet 1861, Édouard Baldus (1861)

Authenticity, provenance, restitution.

By type of dispute
Image credits (16)
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